This book was published by Doubleday & Company, Inc., Garden City New York during 1963. It was written by Jerry West and illustrated by Helen S. Hamilton. It is a hard cover and retains its original dust jacket. It has red boards with black stamped text and graphics. It measures approximately 8 ½" tall by 5 ½" wide. It has 176 pages. The dust jacket is in fairly good condition with some wear and minor tears on the edges. There is some shelf wear and the corners are slightly bumped.
In this episode the Hollisters get to go to Germany and begin to solve a riddle that was hidden inside of an old broken cuckoo clock. There is stolen treasure and thieves that the Hollisters become entangled with.